Nothing beats a perfect one-bowl cake in your recipe repertoire.
Preheat oven to 350 degrees Fahrenheit. Line a nine x 13-inch baking dish or two large loaf pans with parchment paper and set aside.
In the bowl of an electric mixer, beat eggs and sugar until light and fluffy. Add oil and mix to combine.
Add cocoa powder, baking soda, and potato starch. Mix until just combined.
Pour batter into prepared pan.
Bake 50 minutes or until a toothpick inserted in the center comes out clean. Let cool on a wire rack.